English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Samples of stinging nettle or common nettle (Urtica dioica L.) were collected  from the area of Banja Luka. To measure and evaluate the content of  chlorophyll (a and b), carotenoids, and soluble proteins, as well as  peroxidase activity (POD, EC 1.11.1.7.), fresh nettle leaves of different  developmental stages were used. Dried nettle leaves were used to obtain  ethanol extract. The dry residue of ethanol extract was dissolved in  methanol and the obtained solution was used to determine the content of  total phenols, flavonoids, flavonols, as well as non-enzymatic antioxidant  activity and antimicrobial activity. The non-enzymatic antioxidant activity  was determined by different methods: FRAP, DPPH, and ABTS. The results were  compared to those of standard substances like vitamin C, BHT, and BHA.  Antimicrobial activity was screened by using macrodilution method. The  obtained results showed insignificantly higher content of chlorophyll,  carotenoids, and proteins in young nettle leaves as well as an increase in  the soluble peroxidase activities. Native electrophoresis of the soluble  fraction showed the presence of two peroxidase isophorms in the soluble  protein fraction of nettle leaves. The total phenolic content in nettle  extracts amounted to 208.37 mg GAE/gdw, the content of total flavonoids was  20.29 mg QE/gdw, and the content of total flavonols was 22.83 mg QE/gdw. The  antioxidant activity determined by FRAP method was 7.50 mM Fe(II)/gdw,  whereas the antioxidant activity measured by using DPPH and ABTS methods,  with IC50 values, were 31.38 and 23.55 μg mL-1, respectively. These results  showed the weak and moderate antioxidant capacity of stinging nettle.  Extract of Urtica dioica L. was tested for antibacterial acivity against  various Grampositive and Gram-negative bacteria: Bacillus subtilis IP 5832,  Lactobacillus plantarum 299v (Lp299v), Pseudomonas aeruginosa, and  Escherichia coli isolated from food and Escherichia coli isolated from urine  samples. Ampicillin, erythromycin, ciprofloxacin, and gentamicin were used  as positive control. The results showed that minimum inhibitory  concentration (MIC) and minimum bactericidal concentration (MBC) of the  extract ranged from 9.05 to more than 149.93 mg mL-1

Characterization of antioxidant and antimicrobial activities of nettle leaves (Urtica dioica L.)